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[Octave-bug-tracker] [bug #32502] cov function returns incorrect results


From: Ivan
Subject: [Octave-bug-tracker] [bug #32502] cov function returns incorrect results for complex matrices
Date: Thu, 29 Sep 2011 05:11:22 +0000
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.63 Safari/534.3

Follow-up Comment #5, bug #32502 (project octave):

Still  I'm not sure that Octave do the things right. Once again here is the
code (from Octave):

c = conj (x' * x / (n - 1));

Here we see a double complex conjugation. First operator' do conjugation, and
after it there is an explicit call to conj. In mathematical notation we do the
following:

        H    H
    / X   X    
C = |--------|
      N-1  /

So I think that the extra call to conj is erroneous, am I right?

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